An electricity utility company charges ₹ 7 per kWh (kilo watt-hour). If a…

GATE · 2025 · CE · Set 2 · General AptitudeGATE · 2025 · MN · General AptitudeGATE · 2025 · ST · General AptitudeGATE · 2025 · XE · General AptitudeGATE · 2025 · XL · General Aptitude

An electricity utility company charges ₹ 7 per kWh (kilo watt-hour). If a 40-watt desk light is left on for 10 hours each night for 180 days, what would be the cost of energy consumption? If the desk light is on for 2 more hours each night for the 180 days, what would be the percentage-increase in the cost of energy consumption?

A.
₹ 604.8; 10%
B.
₹ 504; 20%
C.
₹ 604.8; 12%
D.
₹ 720; 15%

Attempted by 14 students.

Show answer

Correct answer: B

The worked solution is available to enrolled students.

Explore the full course: Iocl Engineers Officer Grade A Paper 1